A238847 - cp's OEIS frontend

A238847 Smallest k such that k*n^3 + 1 is prime.

n	a(n)
1	1
2	2
3	4
4	3
5	2
6	2
7	4
8	15
9	2
10	3
11	2
12	2
13	6
14	3
15	10
16	3
17	26
18	3
19	4
20	2
21	2
22	15
23	26
24	7
25	4
26	2
27	2
28	6
29	2
30	2
31	10
32	2
33	20
34	4
35	2
36	3
37	4
38	3
39	4
40	6
41	6
42	4
43	10
44	2
45	14
46	16
47	12
48	3
49	4
50	9
51	10
52	6
53	24
54	3
55	4
56	6
57	2
58	3
59	2
60	2
61	18
62	6
63	6
64	3
65	14
66	5
67	16
68	9
69	18
70	3
71	2
72	2
73	4
74	3
75	10
76	6

[1, 2, 4, 3, 2, 2, 4, 15, 2, 3, 2, 2, 6, 3, 10, 3, 26, 3, 4, 2, 2, 15, 26, 7, 4, 2, 2, 6, 2, 2, 10, 2, 20, 4, 2, 3, 4, 3, 4, 6, 6, 4, 10, 2, 14, 16, 12, 3, 4, 9, 10, 6, 24, 3, 4, 6, 2, 3, 2, 2, 18, 6, 6, 3, 14, 5, 16, 9, 18, 3, 2, 2, 4, 3, 10, 6]

cp's OEIS Frontend

A238847 Smallest k such that k*n^3 + 1 is prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	3
5	2
6	2
7	4
8	15
9	2
10	3
11	2
12	2
13	6
14	3
15	10
16	3
17	26
18	3
19	4
20	2
21	2
22	15
23	26
24	7
25	4
26	2
27	2
28	6
29	2
30	2
31	10
32	2
33	20
34	4
35	2
36	3
37	4
38	3
39	4
40	6
41	6
42	4
43	10
44	2
45	14
46	16
47	12
48	3
49	4
50	9
51	10
52	6
53	24
54	3
55	4
56	6
57	2
58	3
59	2
60	2
61	18
62	6
63	6
64	3
65	14
66	5
67	16
68	9
69	18
70	3
71	2
72	2
73	4
74	3
75	10
76	6

n	a(n)
1	1
2	2
3	4
4	3
5	2
6	2
7	4
8	15
9	2
10	3
11	2
12	2
13	6
14	3
15	10
16	3
17	26
18	3
19	4
20	2
21	2
22	15
23	26
24	7
25	4
26	2
27	2
28	6
29	2
30	2
31	10
32	2
33	20
34	4
35	2
36	3
37	4
38	3
39	4
40	6
41	6
42	4
43	10
44	2
45	14
46	16
47	12
48	3
49	4
50	9
51	10
52	6
53	24
54	3
55	4
56	6
57	2
58	3
59	2
60	2
61	18
62	6
63	6
64	3
65	14
66	5
67	16
68	9
69	18
70	3
71	2
72	2
73	4
74	3
75	10
76	6

n	a(n)
1	1
2	2
3	4
4	3
5	2
6	2
7	4
8	15
9	2
10	3
11	2
12	2
13	6
14	3
15	10
16	3
17	26
18	3
19	4
20	2
21	2
22	15
23	26
24	7
25	4
26	2
27	2
28	6
29	2
30	2
31	10
32	2
33	20
34	4
35	2
36	3
37	4
38	3
39	4
40	6
41	6
42	4
43	10
44	2
45	14
46	16
47	12
48	3
49	4
50	9
51	10
52	6
53	24
54	3
55	4
56	6
57	2
58	3
59	2
60	2
61	18
62	6
63	6
64	3
65	14
66	5
67	16
68	9
69	18
70	3
71	2
72	2
73	4
74	3
75	10
76	6